Medicare Advantage in Dorchester County, South Carolina
14,912 people in Dorchester County, South Carolina were enrolled in Medicare Advantage in October 2026, 43.2% of 34,513 eligible beneficiaries (+0.5 pts since October 2025). Humana Inc. is the largest parent organization with 33% of reported enrollment; 14 parent organizations have 11 or more members and the HHI is 2,233 (highly concentrated). For 2027, 137 members here are in plans that terminate or leave the county. MA plans offered go from 47 to 47.
Parent organizations in Dorchester County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 4,904 | +656 | 33.0% |
| UnitedHealth Group, Inc. | 4,389 | −1,282 | 29.6% |
| Devoted Health, Inc. | 1,576 | +1,102 | 10.6% |
| BlueCross BlueShield of South Carolina (BCBSSC) | 1,323 | +630 | 8.9% |
| CVS Health Corporation | 962 | −827 | 6.5% |
| Centene Corporation | 561 | +17 | 3.8% |
| Health Care Service Corporation | 541 | +162 | 3.6% |
| Clover Health Holdings, Inc. | 336 | +185 | 2.3% |
| Independence Health Group, Inc. | 73 | −4 | 0.5% |
| Molina Healthcare, Inc. | 58 | −5 | 0.4% |
| Elevance Health, Inc. | 47 | −11 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 36 | +3 | 0.2% |
| BoldAge PACE, LLC | 23 | new | 0.2% |
| Highmark Health | 16 | +4 | 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 7,525 beneficiaries in Dorchester County were assigned to 118 Medicare Shared Savings Program ACOs, 52.8% of assignable Original Medicare beneficiaries. Together, roughly 73% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.